Home / 287,314,143.18-430,971,218.46-68,964,484.77

Finding the Fourth Proportional to 287,314,143.18, 430,971,218.46 and 68,964,484.77

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Solution

The fourth proportional to 287,314,143.18, 430,971,218.46 and 68,964,484.77 is: 103,446,728.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,314,143.18 : 430,971,218.46 = 68,964,484.77 : x
  2. Step 2: Convert to fraction form
    287,314,143.18/430,971,218.46 = 68,964,484.77/x
  3. Step 3: Cross multiply
    287,314,143.18x = 430,971,218.46 × 68,964,484.77
  4. Step 4: Simplify right side
    287,314,143.18x = 29,721,708,031,793,008
  5. Step 5: Solve for x
    x = 29,721,708,031,793,008/287,314,143.18
  6. Step 6: Final answer
    x = 103,446,728.04

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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.