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Finding the Fourth Proportional to 215,655.40, 297,605.63 and 125,065.07

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Solution

The fourth proportional to 215,655.40, 297,605.63 and 125,065.07 is: 172,590.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,655.40 : 297,605.63 = 125,065.07 : x
  2. Step 2: Convert to fraction form
    215,655.40/297,605.63 = 125,065.07/x
  3. Step 3: Cross multiply
    215,655.40x = 297,605.63 × 125,065.07
  4. Step 4: Simplify right side
    215,655.40x = 37,220,068,948.34
  5. Step 5: Solve for x
    x = 37,220,068,948.34/215,655.40
  6. Step 6: Final answer
    x = 172,590.48

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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.