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Finding the Fourth Proportional to 558,320.40, 838,258.20 and 348,368.40

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Solution

The fourth proportional to 558,320.40, 838,258.20 and 348,368.40 is: 523,037.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,320.40 : 838,258.20 = 348,368.40 : x
  2. Step 2: Convert to fraction form
    558,320.40/838,258.20 = 348,368.40/x
  3. Step 3: Cross multiply
    558,320.40x = 838,258.20 × 348,368.40
  4. Step 4: Simplify right side
    558,320.40x = 292,022,667,920.88
  5. Step 5: Solve for x
    x = 292,022,667,920.88/558,320.40
  6. Step 6: Final answer
    x = 523,037.79

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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.