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Finding the Fourth Proportional to 340,038.80, 510,058.20 and 300,672.80

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Solution

The fourth proportional to 340,038.80, 510,058.20 and 300,672.80 is: 451,009.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,038.80 : 510,058.20 = 300,672.80 : x
  2. Step 2: Convert to fraction form
    340,038.80/510,058.20 = 300,672.80/x
  3. Step 3: Cross multiply
    340,038.80x = 510,058.20 × 300,672.80
  4. Step 4: Simplify right side
    340,038.80x = 153,360,627,156.96
  5. Step 5: Solve for x
    x = 153,360,627,156.96/340,038.80
  6. Step 6: Final answer
    x = 451,009.20

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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.