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Finding the Fourth Proportional to 353,612.59, 487,995.93 and 217,724.93

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Solution

The fourth proportional to 353,612.59, 487,995.93 and 217,724.93 is: 300,466.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,612.59 : 487,995.93 = 217,724.93 : x
  2. Step 2: Convert to fraction form
    353,612.59/487,995.93 = 217,724.93/x
  3. Step 3: Cross multiply
    353,612.59x = 487,995.93 × 217,724.93
  4. Step 4: Simplify right side
    353,612.59x = 106,248,879,699.54
  5. Step 5: Solve for x
    x = 106,248,879,699.54/353,612.59
  6. Step 6: Final answer
    x = 300,466.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.