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Finding the Fourth Proportional to 318,430.55, 439,434.14 and 175,187.52

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Solution

The fourth proportional to 318,430.55, 439,434.14 and 175,187.52 is: 241,758.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,430.55 : 439,434.14 = 175,187.52 : x
  2. Step 2: Convert to fraction form
    318,430.55/439,434.14 = 175,187.52/x
  3. Step 3: Cross multiply
    318,430.55x = 439,434.14 × 175,187.52
  4. Step 4: Simplify right side
    318,430.55x = 76,983,377,189.93
  5. Step 5: Solve for x
    x = 76,983,377,189.93/318,430.55
  6. Step 6: Final answer
    x = 241,758.77

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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.