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Finding the Fourth Proportional to 153,328, 229,992 and 42,520

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Solution

The fourth proportional to 153,328, 229,992 and 42,520 is: 63,780

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,328 : 229,992 = 42,520 : x
  2. Step 2: Convert to fraction form
    153,328/229,992 = 42,520/x
  3. Step 3: Cross multiply
    153,328x = 229,992 × 42,520
  4. Step 4: Simplify right side
    153,328x = 9,779,259,840
  5. Step 5: Solve for x
    x = 9,779,259,840/153,328
  6. Step 6: Final answer
    x = 63,780

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.