Home / 385,125.40-577,688.10-118,862.20

Finding the Fourth Proportional to 385,125.40, 577,688.10 and 118,862.20

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Solution

The fourth proportional to 385,125.40, 577,688.10 and 118,862.20 is: 178,293.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,125.40 : 577,688.10 = 118,862.20 : x
  2. Step 2: Convert to fraction form
    385,125.40/577,688.10 = 118,862.20/x
  3. Step 3: Cross multiply
    385,125.40x = 577,688.10 × 118,862.20
  4. Step 4: Simplify right side
    385,125.40x = 68,665,278,479.82
  5. Step 5: Solve for x
    x = 68,665,278,479.82/385,125.40
  6. Step 6: Final answer
    x = 178,293.30

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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.