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Finding the Fourth Proportional to 290,007.94, 435,011.08 and 79,646.08

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Solution

The fourth proportional to 290,007.94, 435,011.08 and 79,646.08 is: 119,468.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,007.94 : 435,011.08 = 79,646.08 : x
  2. Step 2: Convert to fraction form
    290,007.94/435,011.08 = 79,646.08/x
  3. Step 3: Cross multiply
    290,007.94x = 435,011.08 × 79,646.08
  4. Step 4: Simplify right side
    290,007.94x = 34,646,927,278.57
  5. Step 5: Solve for x
    x = 34,646,927,278.57/290,007.94
  6. Step 6: Final answer
    x = 119,468.89

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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.