Home / 223,780.14-308,807.51-128,220.39

Finding the Fourth Proportional to 223,780.14, 308,807.51 and 128,220.39

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Solution

The fourth proportional to 223,780.14, 308,807.51 and 128,220.39 is: 176,938.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,780.14 : 308,807.51 = 128,220.39 : x
  2. Step 2: Convert to fraction form
    223,780.14/308,807.51 = 128,220.39/x
  3. Step 3: Cross multiply
    223,780.14x = 308,807.51 × 128,220.39
  4. Step 4: Simplify right side
    223,780.14x = 39,595,418,726.03
  5. Step 5: Solve for x
    x = 39,595,418,726.03/223,780.14
  6. Step 6: Final answer
    x = 176,938.93

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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.