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Finding the Fourth Proportional to 353,458.80, 487,693.08 and 258,017.52

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Solution

The fourth proportional to 353,458.80, 487,693.08 and 258,017.52 is: 356,005.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,458.80 : 487,693.08 = 258,017.52 : x
  2. Step 2: Convert to fraction form
    353,458.80/487,693.08 = 258,017.52/x
  3. Step 3: Cross multiply
    353,458.80x = 487,693.08 × 258,017.52
  4. Step 4: Simplify right side
    353,458.80x = 125,833,359,022.76
  5. Step 5: Solve for x
    x = 125,833,359,022.76/353,458.80
  6. Step 6: Final answer
    x = 356,005.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.