Home / 287,255.50-430,980.29-127,309.56

Finding the Fourth Proportional to 287,255.50, 430,980.29 and 127,309.56

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Solution

The fourth proportional to 287,255.50, 430,980.29 and 127,309.56 is: 191,007.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,255.50 : 430,980.29 = 127,309.56 : x
  2. Step 2: Convert to fraction form
    287,255.50/430,980.29 = 127,309.56/x
  3. Step 3: Cross multiply
    287,255.50x = 430,980.29 × 127,309.56
  4. Step 4: Simplify right side
    287,255.50x = 54,867,911,088.57
  5. Step 5: Solve for x
    x = 54,867,911,088.57/287,255.50
  6. Step 6: Final answer
    x = 191,007.35

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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.