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Finding the Fourth Proportional to 479,417.42, 719,001.74 and 142,378.85

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Solution

The fourth proportional to 479,417.42, 719,001.74 and 142,378.85 is: 213,531.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,417.42 : 719,001.74 = 142,378.85 : x
  2. Step 2: Convert to fraction form
    479,417.42/719,001.74 = 142,378.85/x
  3. Step 3: Cross multiply
    479,417.42x = 719,001.74 × 142,378.85
  4. Step 4: Simplify right side
    479,417.42x = 102,370,636,582.30
  5. Step 5: Solve for x
    x = 102,370,636,582.30/479,417.42
  6. Step 6: Final answer
    x = 213,531.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.