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Finding the Fourth Proportional to 238,838.75, 358,261.20 and 70,320.76

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Solution

The fourth proportional to 238,838.75, 358,261.20 and 70,320.76 is: 105,482.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,838.75 : 358,261.20 = 70,320.76 : x
  2. Step 2: Convert to fraction form
    238,838.75/358,261.20 = 70,320.76/x
  3. Step 3: Cross multiply
    238,838.75x = 358,261.20 × 70,320.76
  4. Step 4: Simplify right side
    238,838.75x = 25,193,198,966.86
  5. Step 5: Solve for x
    x = 25,193,198,966.86/238,838.75
  6. Step 6: Final answer
    x = 105,482.04

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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.