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Finding the Fourth Proportional to 357,345.62, 539,260.72 and 345,448.34

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Solution

The fourth proportional to 357,345.62, 539,260.72 and 345,448.34 is: 521,306.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,345.62 : 539,260.72 = 345,448.34 : x
  2. Step 2: Convert to fraction form
    357,345.62/539,260.72 = 345,448.34/x
  3. Step 3: Cross multiply
    357,345.62x = 539,260.72 × 345,448.34
  4. Step 4: Simplify right side
    357,345.62x = 186,286,718,823.96
  5. Step 5: Solve for x
    x = 186,286,718,823.96/357,345.62
  6. Step 6: Final answer
    x = 521,306.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.