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Finding the Fourth Proportional to 386,247.80, 579,371.70 and 370,501.40

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Solution

The fourth proportional to 386,247.80, 579,371.70 and 370,501.40 is: 555,752.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,247.80 : 579,371.70 = 370,501.40 : x
  2. Step 2: Convert to fraction form
    386,247.80/579,371.70 = 370,501.40/x
  3. Step 3: Cross multiply
    386,247.80x = 579,371.70 × 370,501.40
  4. Step 4: Simplify right side
    386,247.80x = 214,658,025,970.38
  5. Step 5: Solve for x
    x = 214,658,025,970.38/386,247.80
  6. Step 6: Final answer
    x = 555,752.10

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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.