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Finding the Fourth Proportional to 402,215.55, 603,314.10 and 202,482.30

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Solution

The fourth proportional to 402,215.55, 603,314.10 and 202,482.30 is: 303,718.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,215.55 : 603,314.10 = 202,482.30 : x
  2. Step 2: Convert to fraction form
    402,215.55/603,314.10 = 202,482.30/x
  3. Step 3: Cross multiply
    402,215.55x = 603,314.10 × 202,482.30
  4. Step 4: Simplify right side
    402,215.55x = 122,160,426,590.43
  5. Step 5: Solve for x
    x = 122,160,426,590.43/402,215.55
  6. Step 6: Final answer
    x = 303,718.81

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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.