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Finding the Fourth Proportional to 290,435.96, 435,825.26 and 121,985.93

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Solution

The fourth proportional to 290,435.96, 435,825.26 and 121,985.93 is: 183,050.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,435.96 : 435,825.26 = 121,985.93 : x
  2. Step 2: Convert to fraction form
    290,435.96/435,825.26 = 121,985.93/x
  3. Step 3: Cross multiply
    290,435.96x = 435,825.26 × 121,985.93
  4. Step 4: Simplify right side
    290,435.96x = 53,164,550,595.67
  5. Step 5: Solve for x
    x = 53,164,550,595.67/290,435.96
  6. Step 6: Final answer
    x = 183,050.85

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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.