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Finding the Fourth Proportional to 578,586.72, 867,810.99 and 152,155.78

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Solution

The fourth proportional to 578,586.72, 867,810.99 and 152,155.78 is: 228,215.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,586.72 : 867,810.99 = 152,155.78 : x
  2. Step 2: Convert to fraction form
    578,586.72/867,810.99 = 152,155.78/x
  3. Step 3: Cross multiply
    578,586.72x = 867,810.99 × 152,155.78
  4. Step 4: Simplify right side
    578,586.72x = 132,042,458,076.02
  5. Step 5: Solve for x
    x = 132,042,458,076.02/578,586.72
  6. Step 6: Final answer
    x = 228,215.50

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.