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Finding the Fourth Proportional to 225,430.68, 311,103.72 and 124,828.68

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Solution

The fourth proportional to 225,430.68, 311,103.72 and 124,828.68 is: 172,268.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,430.68 : 311,103.72 = 124,828.68 : x
  2. Step 2: Convert to fraction form
    225,430.68/311,103.72 = 124,828.68/x
  3. Step 3: Cross multiply
    225,430.68x = 311,103.72 × 124,828.68
  4. Step 4: Simplify right side
    225,430.68x = 38,834,666,710.69
  5. Step 5: Solve for x
    x = 38,834,666,710.69/225,430.68
  6. Step 6: Final answer
    x = 172,268.77

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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.