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Finding the Fourth Proportional to 425,063.40, 637,400.70 and 188,284.20

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Solution

The fourth proportional to 425,063.40, 637,400.70 and 188,284.20 is: 282,340.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,063.40 : 637,400.70 = 188,284.20 : x
  2. Step 2: Convert to fraction form
    425,063.40/637,400.70 = 188,284.20/x
  3. Step 3: Cross multiply
    425,063.40x = 637,400.70 × 188,284.20
  4. Step 4: Simplify right side
    425,063.40x = 120,012,480,878.94
  5. Step 5: Solve for x
    x = 120,012,480,878.94/425,063.40
  6. Step 6: Final answer
    x = 282,340.19

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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.