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Finding the Fourth Proportional to 315,550.47, 472,993.55 and 189,259.42

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Solution

The fourth proportional to 315,550.47, 472,993.55 and 189,259.42 is: 283,689.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,550.47 : 472,993.55 = 189,259.42 : x
  2. Step 2: Convert to fraction form
    315,550.47/472,993.55 = 189,259.42/x
  3. Step 3: Cross multiply
    315,550.47x = 472,993.55 × 189,259.42
  4. Step 4: Simplify right side
    315,550.47x = 89,518,484,936.74
  5. Step 5: Solve for x
    x = 89,518,484,936.74/315,550.47
  6. Step 6: Final answer
    x = 283,689.91

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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.