Home / 390,569.29-585,645.55-185,188.12

Finding the Fourth Proportional to 390,569.29, 585,645.55 and 185,188.12

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Solution

The fourth proportional to 390,569.29, 585,645.55 and 185,188.12 is: 277,683.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,569.29 : 585,645.55 = 185,188.12 : x
  2. Step 2: Convert to fraction form
    390,569.29/585,645.55 = 185,188.12/x
  3. Step 3: Cross multiply
    390,569.29x = 585,645.55 × 185,188.12
  4. Step 4: Simplify right side
    390,569.29x = 108,454,596,463.78
  5. Step 5: Solve for x
    x = 108,454,596,463.78/390,569.29
  6. Step 6: Final answer
    x = 277,683.37

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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.