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Finding the Fourth Proportional to 443,343.20, 665,014.80 and 266,050.40

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Solution

The fourth proportional to 443,343.20, 665,014.80 and 266,050.40 is: 399,075.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,343.20 : 665,014.80 = 266,050.40 : x
  2. Step 2: Convert to fraction form
    443,343.20/665,014.80 = 266,050.40/x
  3. Step 3: Cross multiply
    443,343.20x = 665,014.80 × 266,050.40
  4. Step 4: Simplify right side
    443,343.20x = 176,927,453,545.92
  5. Step 5: Solve for x
    x = 176,927,453,545.92/443,343.20
  6. Step 6: Final answer
    x = 399,075.60

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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.