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Finding the Fourth Proportional to 315,332.80, 472,999.20 and 259,345.60

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Solution

The fourth proportional to 315,332.80, 472,999.20 and 259,345.60 is: 389,018.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,332.80 : 472,999.20 = 259,345.60 : x
  2. Step 2: Convert to fraction form
    315,332.80/472,999.20 = 259,345.60/x
  3. Step 3: Cross multiply
    315,332.80x = 472,999.20 × 259,345.60
  4. Step 4: Simplify right side
    315,332.80x = 122,670,261,323.52
  5. Step 5: Solve for x
    x = 122,670,261,323.52/315,332.80
  6. Step 6: Final answer
    x = 389,018.40

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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.