Home / 317,899.20-476,848.80-81,260.40

Finding the Fourth Proportional to 317,899.20, 476,848.80 and 81,260.40

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Solution

The fourth proportional to 317,899.20, 476,848.80 and 81,260.40 is: 121,890.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,899.20 : 476,848.80 = 81,260.40 : x
  2. Step 2: Convert to fraction form
    317,899.20/476,848.80 = 81,260.40/x
  3. Step 3: Cross multiply
    317,899.20x = 476,848.80 × 81,260.40
  4. Step 4: Simplify right side
    317,899.20x = 38,748,924,227.52
  5. Step 5: Solve for x
    x = 38,748,924,227.52/317,899.20
  6. Step 6: Final answer
    x = 121,890.60

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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.