Home / 290,001.90-434,985.54-90,294.18

Finding the Fourth Proportional to 290,001.90, 434,985.54 and 90,294.18

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Solution

The fourth proportional to 290,001.90, 434,985.54 and 90,294.18 is: 135,435.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,001.90 : 434,985.54 = 90,294.18 : x
  2. Step 2: Convert to fraction form
    290,001.90/434,985.54 = 90,294.18/x
  3. Step 3: Cross multiply
    290,001.90x = 434,985.54 × 90,294.18
  4. Step 4: Simplify right side
    290,001.90x = 39,276,662,646.16
  5. Step 5: Solve for x
    x = 39,276,662,646.16/290,001.90
  6. Step 6: Final answer
    x = 135,435.88

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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.