Home / 289,442.66-434,205.97-89,779.07

Finding the Fourth Proportional to 289,442.66, 434,205.97 and 89,779.07

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Solution

The fourth proportional to 289,442.66, 434,205.97 and 89,779.07 is: 134,681.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,442.66 : 434,205.97 = 89,779.07 : x
  2. Step 2: Convert to fraction form
    289,442.66/434,205.97 = 89,779.07/x
  3. Step 3: Cross multiply
    289,442.66x = 434,205.97 × 89,779.07
  4. Step 4: Simplify right side
    289,442.66x = 38,982,609,036.12
  5. Step 5: Solve for x
    x = 38,982,609,036.12/289,442.66
  6. Step 6: Final answer
    x = 134,681.63

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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.