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Finding the Fourth Proportional to 208,685.70, 288,000.54 and 118,041.72

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Solution

The fourth proportional to 208,685.70, 288,000.54 and 118,041.72 is: 162,905.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,685.70 : 288,000.54 = 118,041.72 : x
  2. Step 2: Convert to fraction form
    208,685.70/288,000.54 = 118,041.72/x
  3. Step 3: Cross multiply
    208,685.70x = 288,000.54 × 118,041.72
  4. Step 4: Simplify right side
    208,685.70x = 33,996,079,102.53
  5. Step 5: Solve for x
    x = 33,996,079,102.53/208,685.70
  6. Step 6: Final answer
    x = 162,905.65

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1.5x scale

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.