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Finding the Fourth Proportional to 525,205.60, 788,002.80 and 209,888.80

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Solution

The fourth proportional to 525,205.60, 788,002.80 and 209,888.80 is: 314,910.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,205.60 : 788,002.80 = 209,888.80 : x
  2. Step 2: Convert to fraction form
    525,205.60/788,002.80 = 209,888.80/x
  3. Step 3: Cross multiply
    525,205.60x = 788,002.80 × 209,888.80
  4. Step 4: Simplify right side
    525,205.60x = 165,392,962,088.64
  5. Step 5: Solve for x
    x = 165,392,962,088.64/525,205.60
  6. Step 6: Final answer
    x = 314,910.89

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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.