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Finding the Fourth Proportional to 525,715.80, 787,407.30 and 210,010.20

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Solution

The fourth proportional to 525,715.80, 787,407.30 and 210,010.20 is: 314,549.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,715.80 : 787,407.30 = 210,010.20 : x
  2. Step 2: Convert to fraction form
    525,715.80/787,407.30 = 210,010.20/x
  3. Step 3: Cross multiply
    525,715.80x = 787,407.30 × 210,010.20
  4. Step 4: Simplify right side
    525,715.80x = 165,363,564,554.46
  5. Step 5: Solve for x
    x = 165,363,564,554.46/525,715.80
  6. Step 6: Final answer
    x = 314,549.35

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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.