Home / 305,315.13-457,649.27-102,718.31

Finding the Fourth Proportional to 305,315.13, 457,649.27 and 102,718.31

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Solution

The fourth proportional to 305,315.13, 457,649.27 and 102,718.31 is: 153,968.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,315.13 : 457,649.27 = 102,718.31 : x
  2. Step 2: Convert to fraction form
    305,315.13/457,649.27 = 102,718.31/x
  3. Step 3: Cross multiply
    305,315.13x = 457,649.27 × 102,718.31
  4. Step 4: Simplify right side
    305,315.13x = 47,008,956,785.30
  5. Step 5: Solve for x
    x = 47,008,956,785.30/305,315.13
  6. Step 6: Final answer
    x = 153,968.64

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1.5x scale

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.