Home / 287,630,649.61-431,443,372.18-90,894,095.16

Finding the Fourth Proportional to 287,630,649.61, 431,443,372.18 and 90,894,095.16

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Solution

The fourth proportional to 287,630,649.61, 431,443,372.18 and 90,894,095.16 is: 136,340,320.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,630,649.61 : 431,443,372.18 = 90,894,095.16 : x
  2. Step 2: Convert to fraction form
    287,630,649.61/431,443,372.18 = 90,894,095.16/x
  3. Step 3: Cross multiply
    287,630,649.61x = 431,443,372.18 × 90,894,095.16
  4. Step 4: Simplify right side
    287,630,649.61x = 39,215,654,927,080,216
  5. Step 5: Solve for x
    x = 39,215,654,927,080,216/287,630,649.61
  6. Step 6: Final answer
    x = 136,340,320.41

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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.