Home / 838,136.85-1,257,400.49-239,106.21

Finding the Fourth Proportional to 838,136.85, 1,257,400.49 and 239,106.21

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Solution

The fourth proportional to 838,136.85, 1,257,400.49 and 239,106.21 is: 358,715.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,136.85 : 1,257,400.49 = 239,106.21 : x
  2. Step 2: Convert to fraction form
    838,136.85/1,257,400.49 = 239,106.21/x
  3. Step 3: Cross multiply
    838,136.85x = 1,257,400.49 × 239,106.21
  4. Step 4: Simplify right side
    838,136.85x = 300,652,264,420.51
  5. Step 5: Solve for x
    x = 300,652,264,420.51/838,136.85
  6. Step 6: Final answer
    x = 358,715.01

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1.5x scale

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.