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Finding the Fourth Proportional to 318,613.70, 439,670.21 and 175,346.39

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Solution

The fourth proportional to 318,613.70, 439,670.21 and 175,346.39 is: 241,968.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,613.70 : 439,670.21 = 175,346.39 : x
  2. Step 2: Convert to fraction form
    318,613.70/439,670.21 = 175,346.39/x
  3. Step 3: Cross multiply
    318,613.70x = 439,670.21 × 175,346.39
  4. Step 4: Simplify right side
    318,613.70x = 77,094,581,038.96
  5. Step 5: Solve for x
    x = 77,094,581,038.96/318,613.70
  6. Step 6: Final answer
    x = 241,968.82

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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.