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Finding the Fourth Proportional to 342,699.80, 513,744.55 and 162,674.17

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Solution

The fourth proportional to 342,699.80, 513,744.55 and 162,674.17 is: 243,866.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,699.80 : 513,744.55 = 162,674.17 : x
  2. Step 2: Convert to fraction form
    342,699.80/513,744.55 = 162,674.17/x
  3. Step 3: Cross multiply
    342,699.80x = 513,744.55 × 162,674.17
  4. Step 4: Simplify right side
    342,699.80x = 83,572,966,572.23
  5. Step 5: Solve for x
    x = 83,572,966,572.23/342,699.80
  6. Step 6: Final answer
    x = 243,866.40

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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.