Home / 385,748.90-578,120.69-214,963.81

Finding the Fourth Proportional to 385,748.90, 578,120.69 and 214,963.81

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Solution

The fourth proportional to 385,748.90, 578,120.69 and 214,963.81 is: 322,165.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,748.90 : 578,120.69 = 214,963.81 : x
  2. Step 2: Convert to fraction form
    385,748.90/578,120.69 = 214,963.81/x
  3. Step 3: Cross multiply
    385,748.90x = 578,120.69 × 214,963.81
  4. Step 4: Simplify right side
    385,748.90x = 124,275,023,271.63
  5. Step 5: Solve for x
    x = 124,275,023,271.63/385,748.90
  6. Step 6: Final answer
    x = 322,165.60

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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.