Home / 525,205.20-788,196.60-209,888.40

Finding the Fourth Proportional to 525,205.20, 788,196.60 and 209,888.40

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Solution

The fourth proportional to 525,205.20, 788,196.60 and 209,888.40 is: 314,987.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,205.20 : 788,196.60 = 209,888.40 : x
  2. Step 2: Convert to fraction form
    525,205.20/788,196.60 = 209,888.40/x
  3. Step 3: Cross multiply
    525,205.20x = 788,196.60 × 209,888.40
  4. Step 4: Simplify right side
    525,205.20x = 165,433,323,259.44
  5. Step 5: Solve for x
    x = 165,433,323,259.44/525,205.20
  6. Step 6: Final answer
    x = 314,987.98

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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.