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Finding the Fourth Proportional to 385,503.60, 577,477.80 and 267,308.40

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Solution

The fourth proportional to 385,503.60, 577,477.80 and 267,308.40 is: 400,423.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,503.60 : 577,477.80 = 267,308.40 : x
  2. Step 2: Convert to fraction form
    385,503.60/577,477.80 = 267,308.40/x
  3. Step 3: Cross multiply
    385,503.60x = 577,477.80 × 267,308.40
  4. Step 4: Simplify right side
    385,503.60x = 154,364,666,753.52
  5. Step 5: Solve for x
    x = 154,364,666,753.52/385,503.60
  6. Step 6: Final answer
    x = 400,423.41

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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.