Home / 289,789.08-434,686.65-79,427.01

Finding the Fourth Proportional to 289,789.08, 434,686.65 and 79,427.01

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Solution

The fourth proportional to 289,789.08, 434,686.65 and 79,427.01 is: 119,141.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,789.08 : 434,686.65 = 79,427.01 : x
  2. Step 2: Convert to fraction form
    289,789.08/434,686.65 = 79,427.01/x
  3. Step 3: Cross multiply
    289,789.08x = 434,686.65 × 79,427.01
  4. Step 4: Simplify right side
    289,789.08x = 34,525,860,896.42
  5. Step 5: Solve for x
    x = 34,525,860,896.42/289,789.08
  6. Step 6: Final answer
    x = 119,141.35

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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.