Home / 208,009,689.40-312,014,534.10-156,613,439.80

Finding the Fourth Proportional to 208,009,689.40, 312,014,534.10 and 156,613,439.80

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Solution

The fourth proportional to 208,009,689.40, 312,014,534.10 and 156,613,439.80 is: 234,920,159.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,009,689.40 : 312,014,534.10 = 156,613,439.80 : x
  2. Step 2: Convert to fraction form
    208,009,689.40/312,014,534.10 = 156,613,439.80/x
  3. Step 3: Cross multiply
    208,009,689.40x = 312,014,534.10 × 156,613,439.80
  4. Step 4: Simplify right side
    208,009,689.40x = 48,865,669,452,995,408
  5. Step 5: Solve for x
    x = 48,865,669,452,995,408/208,009,689.40
  6. Step 6: Final answer
    x = 234,920,159.70

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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.