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Finding the Fourth Proportional to 390,751.65, 586,150.29 and 150,866.91

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Solution

The fourth proportional to 390,751.65, 586,150.29 and 150,866.91 is: 226,309.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,751.65 : 586,150.29 = 150,866.91 : x
  2. Step 2: Convert to fraction form
    390,751.65/586,150.29 = 150,866.91/x
  3. Step 3: Cross multiply
    390,751.65x = 586,150.29 × 150,866.91
  4. Step 4: Simplify right side
    390,751.65x = 88,430,683,047.90
  5. Step 5: Solve for x
    x = 88,430,683,047.90/390,751.65
  6. Step 6: Final answer
    x = 226,309.17

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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.