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Finding the Fourth Proportional to 385,312.10, 577,968.15 and 267,116.90

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Solution

The fourth proportional to 385,312.10, 577,968.15 and 267,116.90 is: 400,675.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,312.10 : 577,968.15 = 267,116.90 : x
  2. Step 2: Convert to fraction form
    385,312.10/577,968.15 = 267,116.90/x
  3. Step 3: Cross multiply
    385,312.10x = 577,968.15 × 267,116.90
  4. Step 4: Simplify right side
    385,312.10x = 154,385,060,526.74
  5. Step 5: Solve for x
    x = 154,385,060,526.74/385,312.10
  6. Step 6: Final answer
    x = 400,675.35

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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.