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Finding the Fourth Proportional to 158,428.80, 237,679.20 and 53,258.40

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Solution

The fourth proportional to 158,428.80, 237,679.20 and 53,258.40 is: 79,899.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,428.80 : 237,679.20 = 53,258.40 : x
  2. Step 2: Convert to fraction form
    158,428.80/237,679.20 = 53,258.40/x
  3. Step 3: Cross multiply
    158,428.80x = 237,679.20 × 53,258.40
  4. Step 4: Simplify right side
    158,428.80x = 12,658,413,905.28
  5. Step 5: Solve for x
    x = 12,658,413,905.28/158,428.80
  6. Step 6: Final answer
    x = 79,899.70

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1.5x scale

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.