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Finding the Fourth Proportional to 347,778.40, 522,301.20 and 207,810.40

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Solution

The fourth proportional to 347,778.40, 522,301.20 and 207,810.40 is: 312,094.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,778.40 : 522,301.20 = 207,810.40 : x
  2. Step 2: Convert to fraction form
    347,778.40/522,301.20 = 207,810.40/x
  3. Step 3: Cross multiply
    347,778.40x = 522,301.20 × 207,810.40
  4. Step 4: Simplify right side
    347,778.40x = 108,539,621,292.48
  5. Step 5: Solve for x
    x = 108,539,621,292.48/347,778.40
  6. Step 6: Final answer
    x = 312,094.20

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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.