Home / 314,819.24-472,089.53-90,128.48

Finding the Fourth Proportional to 314,819.24, 472,089.53 and 90,128.48

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Solution

The fourth proportional to 314,819.24, 472,089.53 and 90,128.48 is: 135,152.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,819.24 : 472,089.53 = 90,128.48 : x
  2. Step 2: Convert to fraction form
    314,819.24/472,089.53 = 90,128.48/x
  3. Step 3: Cross multiply
    314,819.24x = 472,089.53 × 90,128.48
  4. Step 4: Simplify right side
    314,819.24x = 42,548,711,762.81
  5. Step 5: Solve for x
    x = 42,548,711,762.81/314,819.24
  6. Step 6: Final answer
    x = 135,152.83

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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.