Home / 305,326.90-421,316.10-176,264.86

Finding the Fourth Proportional to 305,326.90, 421,316.10 and 176,264.86

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Solution

The fourth proportional to 305,326.90, 421,316.10 and 176,264.86 is: 243,225.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,326.90 : 421,316.10 = 176,264.86 : x
  2. Step 2: Convert to fraction form
    305,326.90/421,316.10 = 176,264.86/x
  3. Step 3: Cross multiply
    305,326.90x = 421,316.10 × 176,264.86
  4. Step 4: Simplify right side
    305,326.90x = 74,263,223,382.25
  5. Step 5: Solve for x
    x = 74,263,223,382.25/305,326.90
  6. Step 6: Final answer
    x = 243,225.29

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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.