Home / 288,357,913.17-397,935,830.35-156,198,907.98

Finding the Fourth Proportional to 288,357,913.17, 397,935,830.35 and 156,198,907.98

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Solution

The fourth proportional to 288,357,913.17, 397,935,830.35 and 156,198,907.98 is: 215,555,527.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,357,913.17 : 397,935,830.35 = 156,198,907.98 : x
  2. Step 2: Convert to fraction form
    288,357,913.17/397,935,830.35 = 156,198,907.98/x
  3. Step 3: Cross multiply
    288,357,913.17x = 397,935,830.35 × 156,198,907.98
  4. Step 4: Simplify right side
    288,357,913.17x = 62,157,142,147,418,704
  5. Step 5: Solve for x
    x = 62,157,142,147,418,704/288,357,913.17
  6. Step 6: Final answer
    x = 215,555,527.72

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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.