Home / 287,129,378.34-396,236,526.57-156,749,186.34

Finding the Fourth Proportional to 287,129,378.34, 396,236,526.57 and 156,749,186.34

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Solution

The fourth proportional to 287,129,378.34, 396,236,526.57 and 156,749,186.34 is: 216,312,776.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,129,378.34 : 396,236,526.57 = 156,749,186.34 : x
  2. Step 2: Convert to fraction form
    287,129,378.34/396,236,526.57 = 156,749,186.34/x
  3. Step 3: Cross multiply
    287,129,378.34x = 396,236,526.57 × 156,749,186.34
  4. Step 4: Simplify right side
    287,129,378.34x = 62,109,753,138,035,288
  5. Step 5: Solve for x
    x = 62,109,753,138,035,288/287,129,378.34
  6. Step 6: Final answer
    x = 216,312,776.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.