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Finding the Fourth Proportional to 489,128.30, 732,817.65 and 301,921.10

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Solution

The fourth proportional to 489,128.30, 732,817.65 and 301,921.10 is: 452,341.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,128.30 : 732,817.65 = 301,921.10 : x
  2. Step 2: Convert to fraction form
    489,128.30/732,817.65 = 301,921.10/x
  3. Step 3: Cross multiply
    489,128.30x = 732,817.65 × 301,921.10
  4. Step 4: Simplify right side
    489,128.30x = 221,253,110,987.42
  5. Step 5: Solve for x
    x = 221,253,110,987.42/489,128.30
  6. Step 6: Final answer
    x = 452,341.67

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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.