Home / 385,386.48-578,094.84-119,123.28

Finding the Fourth Proportional to 385,386.48, 578,094.84 and 119,123.28

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Solution

The fourth proportional to 385,386.48, 578,094.84 and 119,123.28 is: 178,689.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,386.48 : 578,094.84 = 119,123.28 : x
  2. Step 2: Convert to fraction form
    385,386.48/578,094.84 = 119,123.28/x
  3. Step 3: Cross multiply
    385,386.48x = 578,094.84 × 119,123.28
  4. Step 4: Simplify right side
    385,386.48x = 68,864,553,491.88
  5. Step 5: Solve for x
    x = 68,864,553,491.88/385,386.48
  6. Step 6: Final answer
    x = 178,689.59

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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.