Home / 257,265.26-355,038.72-155,289.10

Finding the Fourth Proportional to 257,265.26, 355,038.72 and 155,289.10

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Solution

The fourth proportional to 257,265.26, 355,038.72 and 155,289.10 is: 214,306.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,265.26 : 355,038.72 = 155,289.10 : x
  2. Step 2: Convert to fraction form
    257,265.26/355,038.72 = 155,289.10/x
  3. Step 3: Cross multiply
    257,265.26x = 355,038.72 × 155,289.10
  4. Step 4: Simplify right side
    257,265.26x = 55,133,643,293.95
  5. Step 5: Solve for x
    x = 55,133,643,293.95/257,265.26
  6. Step 6: Final answer
    x = 214,306.60

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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.