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Finding the Fourth Proportional to 309,552.76, 464,330.85 and 140,955.57

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Solution

The fourth proportional to 309,552.76, 464,330.85 and 140,955.57 is: 211,434.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,552.76 : 464,330.85 = 140,955.57 : x
  2. Step 2: Convert to fraction form
    309,552.76/464,330.85 = 140,955.57/x
  3. Step 3: Cross multiply
    309,552.76x = 464,330.85 × 140,955.57
  4. Step 4: Simplify right side
    309,552.76x = 65,450,018,985.13
  5. Step 5: Solve for x
    x = 65,450,018,985.13/309,552.76
  6. Step 6: Final answer
    x = 211,434.13

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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.