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Finding the Fourth Proportional to 261,079.99, 360,263.31 and 153,643.61

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Solution

The fourth proportional to 261,079.99, 360,263.31 and 153,643.61 is: 212,012.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,079.99 : 360,263.31 = 153,643.61 : x
  2. Step 2: Convert to fraction form
    261,079.99/360,263.31 = 153,643.61/x
  3. Step 3: Cross multiply
    261,079.99x = 360,263.31 × 153,643.61
  4. Step 4: Simplify right side
    261,079.99x = 55,352,155,498.95
  5. Step 5: Solve for x
    x = 55,352,155,498.95/261,079.99
  6. Step 6: Final answer
    x = 212,012.25

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1.5x scale

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.