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Finding the Fourth Proportional to 540,143.57, 745,389.39 and 295,123.08

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Solution

The fourth proportional to 540,143.57, 745,389.39 and 295,123.08 is: 407,265.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,143.57 : 745,389.39 = 295,123.08 : x
  2. Step 2: Convert to fraction form
    540,143.57/745,389.39 = 295,123.08/x
  3. Step 3: Cross multiply
    540,143.57x = 745,389.39 × 295,123.08
  4. Step 4: Simplify right side
    540,143.57x = 219,981,610,625.16
  5. Step 5: Solve for x
    x = 219,981,610,625.16/540,143.57
  6. Step 6: Final answer
    x = 407,265.07

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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.