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Finding the Fourth Proportional to 354,818, 489,731.12 and 233,981.12

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Solution

The fourth proportional to 354,818, 489,731.12 and 233,981.12 is: 322,948.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,818 : 489,731.12 = 233,981.12 : x
  2. Step 2: Convert to fraction form
    354,818/489,731.12 = 233,981.12/x
  3. Step 3: Cross multiply
    354,818x = 489,731.12 × 233,981.12
  4. Step 4: Simplify right side
    354,818x = 114,587,835,956.45
  5. Step 5: Solve for x
    x = 114,587,835,956.45/354,818
  6. Step 6: Final answer
    x = 322,948.20

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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.