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Finding the Fourth Proportional to 472,990.63, 652,740.90 and 258,144.47

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Solution

The fourth proportional to 472,990.63, 652,740.90 and 258,144.47 is: 356,246.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,990.63 : 652,740.90 = 258,144.47 : x
  2. Step 2: Convert to fraction form
    472,990.63/652,740.90 = 258,144.47/x
  3. Step 3: Cross multiply
    472,990.63x = 652,740.90 × 258,144.47
  4. Step 4: Simplify right side
    472,990.63x = 168,501,453,677.82
  5. Step 5: Solve for x
    x = 168,501,453,677.82/472,990.63
  6. Step 6: Final answer
    x = 356,246.92

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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.