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Finding the Fourth Proportional to 315,146.22, 472,024.80 and 260,490.30

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Solution

The fourth proportional to 315,146.22, 472,024.80 and 260,490.30 is: 390,161.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,146.22 : 472,024.80 = 260,490.30 : x
  2. Step 2: Convert to fraction form
    315,146.22/472,024.80 = 260,490.30/x
  3. Step 3: Cross multiply
    315,146.22x = 472,024.80 × 260,490.30
  4. Step 4: Simplify right side
    315,146.22x = 122,957,881,759.44
  5. Step 5: Solve for x
    x = 122,957,881,759.44/315,146.22
  6. Step 6: Final answer
    x = 390,161.37

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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.