Home / 307,521.57-424,327.20-178,430.45

Finding the Fourth Proportional to 307,521.57, 424,327.20 and 178,430.45

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Solution

The fourth proportional to 307,521.57, 424,327.20 and 178,430.45 is: 246,203.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,521.57 : 424,327.20 = 178,430.45 : x
  2. Step 2: Convert to fraction form
    307,521.57/424,327.20 = 178,430.45/x
  3. Step 3: Cross multiply
    307,521.57x = 424,327.20 × 178,430.45
  4. Step 4: Simplify right side
    307,521.57x = 75,712,892,712.83
  5. Step 5: Solve for x
    x = 75,712,892,712.83/307,521.57
  6. Step 6: Final answer
    x = 246,203.52

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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.