Home / 390,505.79-584,928.07-230,409.18

Finding the Fourth Proportional to 390,505.79, 584,928.07 and 230,409.18

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Solution

The fourth proportional to 390,505.79, 584,928.07 and 230,409.18 is: 345,123.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,505.79 : 584,928.07 = 230,409.18 : x
  2. Step 2: Convert to fraction form
    390,505.79/584,928.07 = 230,409.18/x
  3. Step 3: Cross multiply
    390,505.79x = 584,928.07 × 230,409.18
  4. Step 4: Simplify right side
    390,505.79x = 134,772,796,391.66
  5. Step 5: Solve for x
    x = 134,772,796,391.66/390,505.79
  6. Step 6: Final answer
    x = 345,123.68

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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.