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Finding the Fourth Proportional to 458,888.82, 688,430.46 and 143,369.52

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Solution

The fourth proportional to 458,888.82, 688,430.46 and 143,369.52 is: 215,084.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,888.82 : 688,430.46 = 143,369.52 : x
  2. Step 2: Convert to fraction form
    458,888.82/688,430.46 = 143,369.52/x
  3. Step 3: Cross multiply
    458,888.82x = 688,430.46 × 143,369.52
  4. Step 4: Simplify right side
    458,888.82x = 98,699,944,603.58
  5. Step 5: Solve for x
    x = 98,699,944,603.58/458,888.82
  6. Step 6: Final answer
    x = 215,084.66

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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.