Home / 385,973.90-578,960.85-105,491.15

Finding the Fourth Proportional to 385,973.90, 578,960.85 and 105,491.15

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Solution

The fourth proportional to 385,973.90, 578,960.85 and 105,491.15 is: 158,236.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,973.90 : 578,960.85 = 105,491.15 : x
  2. Step 2: Convert to fraction form
    385,973.90/578,960.85 = 105,491.15/x
  3. Step 3: Cross multiply
    385,973.90x = 578,960.85 × 105,491.15
  4. Step 4: Simplify right side
    385,973.90x = 61,075,245,871.48
  5. Step 5: Solve for x
    x = 61,075,245,871.48/385,973.90
  6. Step 6: Final answer
    x = 158,236.73

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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.