Home / 430,829.52-646,235.04-115,286.40

Finding the Fourth Proportional to 430,829.52, 646,235.04 and 115,286.40

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Solution

The fourth proportional to 430,829.52, 646,235.04 and 115,286.40 is: 172,927.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,829.52 : 646,235.04 = 115,286.40 : x
  2. Step 2: Convert to fraction form
    430,829.52/646,235.04 = 115,286.40/x
  3. Step 3: Cross multiply
    430,829.52x = 646,235.04 × 115,286.40
  4. Step 4: Simplify right side
    430,829.52x = 74,502,111,315.46
  5. Step 5: Solve for x
    x = 74,502,111,315.46/430,829.52
  6. Step 6: Final answer
    x = 172,927.13

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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.