Home / 430,024.34-645,061.12-130,514.69

Finding the Fourth Proportional to 430,024.34, 645,061.12 and 130,514.69

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Solution

The fourth proportional to 430,024.34, 645,061.12 and 130,514.69 is: 195,779.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,024.34 : 645,061.12 = 130,514.69 : x
  2. Step 2: Convert to fraction form
    430,024.34/645,061.12 = 130,514.69/x
  3. Step 3: Cross multiply
    430,024.34x = 645,061.12 × 130,514.69
  4. Step 4: Simplify right side
    430,024.34x = 84,189,953,394.22
  5. Step 5: Solve for x
    x = 84,189,953,394.22/430,024.34
  6. Step 6: Final answer
    x = 195,779.51

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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.