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Finding the Fourth Proportional to 238,320.40, 328,887.90 and 130,892.80

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Solution

The fourth proportional to 238,320.40, 328,887.90 and 130,892.80 is: 180,635.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,320.40 : 328,887.90 = 130,892.80 : x
  2. Step 2: Convert to fraction form
    238,320.40/328,887.90 = 130,892.80/x
  3. Step 3: Cross multiply
    238,320.40x = 328,887.90 × 130,892.80
  4. Step 4: Simplify right side
    238,320.40x = 43,049,058,117.12
  5. Step 5: Solve for x
    x = 43,049,058,117.12/238,320.40
  6. Step 6: Final answer
    x = 180,635.22

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1.5x scale

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.