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Finding the Fourth Proportional to 381,034.08, 525,720 and 300,210.72

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Solution

The fourth proportional to 381,034.08, 525,720 and 300,210.72 is: 414,206.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,034.08 : 525,720 = 300,210.72 : x
  2. Step 2: Convert to fraction form
    381,034.08/525,720 = 300,210.72/x
  3. Step 3: Cross multiply
    381,034.08x = 525,720 × 300,210.72
  4. Step 4: Simplify right side
    381,034.08x = 157,826,779,718.40
  5. Step 5: Solve for x
    x = 157,826,779,718.40/381,034.08
  6. Step 6: Final answer
    x = 414,206.47

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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.