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Finding the Fourth Proportional to 417,639.40, 626,459.10 and 240,692.20

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Solution

The fourth proportional to 417,639.40, 626,459.10 and 240,692.20 is: 361,038.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,639.40 : 626,459.10 = 240,692.20 : x
  2. Step 2: Convert to fraction form
    417,639.40/626,459.10 = 240,692.20/x
  3. Step 3: Cross multiply
    417,639.40x = 626,459.10 × 240,692.20
  4. Step 4: Simplify right side
    417,639.40x = 150,783,818,989.02
  5. Step 5: Solve for x
    x = 150,783,818,989.02/417,639.40
  6. Step 6: Final answer
    x = 361,038.30

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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.