Home / 287,630,650.61-431,443,373.68-90,894,096.16

Finding the Fourth Proportional to 287,630,650.61, 431,443,373.68 and 90,894,096.16

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Solution

The fourth proportional to 287,630,650.61, 431,443,373.68 and 90,894,096.16 is: 136,340,321.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,630,650.61 : 431,443,373.68 = 90,894,096.16 : x
  2. Step 2: Convert to fraction form
    287,630,650.61/431,443,373.68 = 90,894,096.16/x
  3. Step 3: Cross multiply
    287,630,650.61x = 431,443,373.68 × 90,894,096.16
  4. Step 4: Simplify right side
    287,630,650.61x = 39,215,655,494,864,736
  5. Step 5: Solve for x
    x = 39,215,655,494,864,736/287,630,650.61
  6. Step 6: Final answer
    x = 136,340,321.91

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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.