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Finding the Fourth Proportional to 542,828.90, 815,020.95 and 306,632.90

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Solution

The fourth proportional to 542,828.90, 815,020.95 and 306,632.90 is: 460,388.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,828.90 : 815,020.95 = 306,632.90 : x
  2. Step 2: Convert to fraction form
    542,828.90/815,020.95 = 306,632.90/x
  3. Step 3: Cross multiply
    542,828.90x = 815,020.95 × 306,632.90
  4. Step 4: Simplify right side
    542,828.90x = 249,912,237,459.26
  5. Step 5: Solve for x
    x = 249,912,237,459.26/542,828.90
  6. Step 6: Final answer
    x = 460,388.60

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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.