Home / 223,688.19-308,702.48-128,210.79

Finding the Fourth Proportional to 223,688.19, 308,702.48 and 128,210.79

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Solution

The fourth proportional to 223,688.19, 308,702.48 and 128,210.79 is: 176,938.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,688.19 : 308,702.48 = 128,210.79 : x
  2. Step 2: Convert to fraction form
    223,688.19/308,702.48 = 128,210.79/x
  3. Step 3: Cross multiply
    223,688.19x = 308,702.48 × 128,210.79
  4. Step 4: Simplify right side
    223,688.19x = 39,578,988,194.71
  5. Step 5: Solve for x
    x = 39,578,988,194.71/223,688.19
  6. Step 6: Final answer
    x = 176,938.21

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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.