Home / 385,068.40-577,641.20-132,315.60

Finding the Fourth Proportional to 385,068.40, 577,641.20 and 132,315.60

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Solution

The fourth proportional to 385,068.40, 577,641.20 and 132,315.60 is: 198,486.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,068.40 : 577,641.20 = 132,315.60 : x
  2. Step 2: Convert to fraction form
    385,068.40/577,641.20 = 132,315.60/x
  3. Step 3: Cross multiply
    385,068.40x = 577,641.20 × 132,315.60
  4. Step 4: Simplify right side
    385,068.40x = 76,430,941,962.72
  5. Step 5: Solve for x
    x = 76,430,941,962.72/385,068.40
  6. Step 6: Final answer
    x = 198,486.66

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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.