Home / 238,391.10-357,547.35-78,469.12

Finding the Fourth Proportional to 238,391.10, 357,547.35 and 78,469.12

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Solution

The fourth proportional to 238,391.10, 357,547.35 and 78,469.12 is: 117,690.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,391.10 : 357,547.35 = 78,469.12 : x
  2. Step 2: Convert to fraction form
    238,391.10/357,547.35 = 78,469.12/x
  3. Step 3: Cross multiply
    238,391.10x = 357,547.35 × 78,469.12
  4. Step 4: Simplify right side
    238,391.10x = 28,056,425,018.96
  5. Step 5: Solve for x
    x = 28,056,425,018.96/238,391.10
  6. Step 6: Final answer
    x = 117,690.74

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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.