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Finding the Fourth Proportional to 611,602.79, 917,332.83 and 162,358.56

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Solution

The fourth proportional to 611,602.79, 917,332.83 and 162,358.56 is: 243,518.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,602.79 : 917,332.83 = 162,358.56 : x
  2. Step 2: Convert to fraction form
    611,602.79/917,332.83 = 162,358.56/x
  3. Step 3: Cross multiply
    611,602.79x = 917,332.83 × 162,358.56
  4. Step 4: Simplify right side
    611,602.79x = 148,936,837,319.53
  5. Step 5: Solve for x
    x = 148,936,837,319.53/611,602.79
  6. Step 6: Final answer
    x = 243,518.90

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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.