Home / 223,506.17-308,436.86-121,531.70

Finding the Fourth Proportional to 223,506.17, 308,436.86 and 121,531.70

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Solution

The fourth proportional to 223,506.17, 308,436.86 and 121,531.70 is: 167,712.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,506.17 : 308,436.86 = 121,531.70 : x
  2. Step 2: Convert to fraction form
    223,506.17/308,436.86 = 121,531.70/x
  3. Step 3: Cross multiply
    223,506.17x = 308,436.86 × 121,531.70
  4. Step 4: Simplify right side
    223,506.17x = 37,484,855,938.46
  5. Step 5: Solve for x
    x = 37,484,855,938.46/223,506.17
  6. Step 6: Final answer
    x = 167,712.85

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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.