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Finding the Fourth Proportional to 353,630.40, 530,445.60 and 297,643.20

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Solution

The fourth proportional to 353,630.40, 530,445.60 and 297,643.20 is: 446,464.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,630.40 : 530,445.60 = 297,643.20 : x
  2. Step 2: Convert to fraction form
    353,630.40/530,445.60 = 297,643.20/x
  3. Step 3: Cross multiply
    353,630.40x = 530,445.60 × 297,643.20
  4. Step 4: Simplify right side
    353,630.40x = 157,883,525,809.92
  5. Step 5: Solve for x
    x = 157,883,525,809.92/353,630.40
  6. Step 6: Final answer
    x = 446,464.80

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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.