Home / 225,712.51-311,432.10-153,125.31

Finding the Fourth Proportional to 225,712.51, 311,432.10 and 153,125.31

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Solution

The fourth proportional to 225,712.51, 311,432.10 and 153,125.31 is: 211,278.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,712.51 : 311,432.10 = 153,125.31 : x
  2. Step 2: Convert to fraction form
    225,712.51/311,432.10 = 153,125.31/x
  3. Step 3: Cross multiply
    225,712.51x = 311,432.10 × 153,125.31
  4. Step 4: Simplify right side
    225,712.51x = 47,688,136,856.45
  5. Step 5: Solve for x
    x = 47,688,136,856.45/225,712.51
  6. Step 6: Final answer
    x = 211,278.22

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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.