Home / 257,264.76-355,038.03-155,288.60

Finding the Fourth Proportional to 257,264.76, 355,038.03 and 155,288.60

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Solution

The fourth proportional to 257,264.76, 355,038.03 and 155,288.60 is: 214,305.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,264.76 : 355,038.03 = 155,288.60 : x
  2. Step 2: Convert to fraction form
    257,264.76/355,038.03 = 155,288.60/x
  3. Step 3: Cross multiply
    257,264.76x = 355,038.03 × 155,288.60
  4. Step 4: Simplify right side
    257,264.76x = 55,133,358,625.46
  5. Step 5: Solve for x
    x = 55,133,358,625.46/257,264.76
  6. Step 6: Final answer
    x = 214,305.91

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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.