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Finding the Fourth Proportional to 230,528, 318,128.64 and 124,544

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Solution

The fourth proportional to 230,528, 318,128.64 and 124,544 is: 171,870.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,528 : 318,128.64 = 124,544 : x
  2. Step 2: Convert to fraction form
    230,528/318,128.64 = 124,544/x
  3. Step 3: Cross multiply
    230,528x = 318,128.64 × 124,544
  4. Step 4: Simplify right side
    230,528x = 39,621,013,340.16
  5. Step 5: Solve for x
    x = 39,621,013,340.16/230,528
  6. Step 6: Final answer
    x = 171,870.72

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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.