Home / 379,148.78-522,985.01-288,305.59

Finding the Fourth Proportional to 379,148.78, 522,985.01 and 288,305.59

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Solution

The fourth proportional to 379,148.78, 522,985.01 and 288,305.59 is: 397,678.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,148.78 : 522,985.01 = 288,305.59 : x
  2. Step 2: Convert to fraction form
    379,148.78/522,985.01 = 288,305.59/x
  3. Step 3: Cross multiply
    379,148.78x = 522,985.01 × 288,305.59
  4. Step 4: Simplify right side
    379,148.78x = 150,779,501,869.21
  5. Step 5: Solve for x
    x = 150,779,501,869.21/379,148.78
  6. Step 6: Final answer
    x = 397,678.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.