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Finding the Fourth Proportional to 326,077.70, 489,116.55 and 247,345.70

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Solution

The fourth proportional to 326,077.70, 489,116.55 and 247,345.70 is: 371,018.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,077.70 : 489,116.55 = 247,345.70 : x
  2. Step 2: Convert to fraction form
    326,077.70/489,116.55 = 247,345.70/x
  3. Step 3: Cross multiply
    326,077.70x = 489,116.55 × 247,345.70
  4. Step 4: Simplify right side
    326,077.70x = 120,980,875,441.34
  5. Step 5: Solve for x
    x = 120,980,875,441.34/326,077.70
  6. Step 6: Final answer
    x = 371,018.55

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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.