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Finding the Fourth Proportional to 325,068.58, 487,427.55 and 147,478.69

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Solution

The fourth proportional to 325,068.58, 487,427.55 and 147,478.69 is: 221,138.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,068.58 : 487,427.55 = 147,478.69 : x
  2. Step 2: Convert to fraction form
    325,068.58/487,427.55 = 147,478.69/x
  3. Step 3: Cross multiply
    325,068.58x = 487,427.55 × 147,478.69
  4. Step 4: Simplify right side
    325,068.58x = 71,885,176,543.91
  5. Step 5: Solve for x
    x = 71,885,176,543.91/325,068.58
  6. Step 6: Final answer
    x = 221,138.49

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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.