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Finding the Fourth Proportional to 385,275.60, 577,915.20 and 135,957.60

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Solution

The fourth proportional to 385,275.60, 577,915.20 and 135,957.60 is: 203,937.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,275.60 : 577,915.20 = 135,957.60 : x
  2. Step 2: Convert to fraction form
    385,275.60/577,915.20 = 135,957.60/x
  3. Step 3: Cross multiply
    385,275.60x = 577,915.20 × 135,957.60
  4. Step 4: Simplify right side
    385,275.60x = 78,571,963,595.52
  5. Step 5: Solve for x
    x = 78,571,963,595.52/385,275.60
  6. Step 6: Final answer
    x = 203,937.04

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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.