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Finding the Fourth Proportional to 290,061.40, 435,135.30 and 103,058.20

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Solution

The fourth proportional to 290,061.40, 435,135.30 and 103,058.20 is: 154,602.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,061.40 : 435,135.30 = 103,058.20 : x
  2. Step 2: Convert to fraction form
    290,061.40/435,135.30 = 103,058.20/x
  3. Step 3: Cross multiply
    290,061.40x = 435,135.30 × 103,058.20
  4. Step 4: Simplify right side
    290,061.40x = 44,844,260,774.46
  5. Step 5: Solve for x
    x = 44,844,260,774.46/290,061.40
  6. Step 6: Final answer
    x = 154,602.65

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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.