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Finding the Fourth Proportional to 326,363.64, 489,547.62 and 89,731.32

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Solution

The fourth proportional to 326,363.64, 489,547.62 and 89,731.32 is: 134,597.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,363.64 : 489,547.62 = 89,731.32 : x
  2. Step 2: Convert to fraction form
    326,363.64/489,547.62 = 89,731.32/x
  3. Step 3: Cross multiply
    326,363.64x = 489,547.62 × 89,731.32
  4. Step 4: Simplify right side
    326,363.64x = 43,927,754,145.46
  5. Step 5: Solve for x
    x = 43,927,754,145.46/326,363.64
  6. Step 6: Final answer
    x = 134,597.57

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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.