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Finding the Fourth Proportional to 290,088.27, 435,153.36 and 121,438.98

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Solution

The fourth proportional to 290,088.27, 435,153.36 and 121,438.98 is: 182,167.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,088.27 : 435,153.36 = 121,438.98 : x
  2. Step 2: Convert to fraction form
    290,088.27/435,153.36 = 121,438.98/x
  3. Step 3: Cross multiply
    290,088.27x = 435,153.36 × 121,438.98
  4. Step 4: Simplify right side
    290,088.27x = 52,844,580,637.37
  5. Step 5: Solve for x
    x = 52,844,580,637.37/290,088.27
  6. Step 6: Final answer
    x = 182,167.24

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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.