Home / 525,512.40-788,038.20-209,864.40

Finding the Fourth Proportional to 525,512.40, 788,038.20 and 209,864.40

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Solution

The fourth proportional to 525,512.40, 788,038.20 and 209,864.40 is: 314,704.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,512.40 : 788,038.20 = 209,864.40 : x
  2. Step 2: Convert to fraction form
    525,512.40/788,038.20 = 209,864.40/x
  3. Step 3: Cross multiply
    525,512.40x = 788,038.20 × 209,864.40
  4. Step 4: Simplify right side
    525,512.40x = 165,381,164,020.08
  5. Step 5: Solve for x
    x = 165,381,164,020.08/525,512.40
  6. Step 6: Final answer
    x = 314,704.59

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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.