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Finding the Fourth Proportional to 356,853.60, 535,280.40 and 146,421.60

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Solution

The fourth proportional to 356,853.60, 535,280.40 and 146,421.60 is: 219,632.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,853.60 : 535,280.40 = 146,421.60 : x
  2. Step 2: Convert to fraction form
    356,853.60/535,280.40 = 146,421.60/x
  3. Step 3: Cross multiply
    356,853.60x = 535,280.40 × 146,421.60
  4. Step 4: Simplify right side
    356,853.60x = 78,376,612,616.64
  5. Step 5: Solve for x
    x = 78,376,612,616.64/356,853.60
  6. Step 6: Final answer
    x = 219,632.40

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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.