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Finding the Fourth Proportional to 555,158.34, 766,117.89 and 300,509.46

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Solution

The fourth proportional to 555,158.34, 766,117.89 and 300,509.46 is: 414,702.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,158.34 : 766,117.89 = 300,509.46 : x
  2. Step 2: Convert to fraction form
    555,158.34/766,117.89 = 300,509.46/x
  3. Step 3: Cross multiply
    555,158.34x = 766,117.89 × 300,509.46
  4. Step 4: Simplify right side
    555,158.34x = 230,225,673,420.24
  5. Step 5: Solve for x
    x = 230,225,673,420.24/555,158.34
  6. Step 6: Final answer
    x = 414,702.72

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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.