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Finding the Fourth Proportional to 424,840.77, 637,109.35 and 140,478.80

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Solution

The fourth proportional to 424,840.77, 637,109.35 and 140,478.80 is: 210,668.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,840.77 : 637,109.35 = 140,478.80 : x
  2. Step 2: Convert to fraction form
    424,840.77/637,109.35 = 140,478.80/x
  3. Step 3: Cross multiply
    424,840.77x = 637,109.35 × 140,478.80
  4. Step 4: Simplify right side
    424,840.77x = 89,500,353,420.04
  5. Step 5: Solve for x
    x = 89,500,353,420.04/424,840.77
  6. Step 6: Final answer
    x = 210,668.00

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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.