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Finding the Fourth Proportional to 525,088.40, 787,114.20 and 258,630.80

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Solution

The fourth proportional to 525,088.40, 787,114.20 and 258,630.80 is: 387,690.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,088.40 : 787,114.20 = 258,630.80 : x
  2. Step 2: Convert to fraction form
    525,088.40/787,114.20 = 258,630.80/x
  3. Step 3: Cross multiply
    525,088.40x = 787,114.20 × 258,630.80
  4. Step 4: Simplify right side
    525,088.40x = 203,571,975,237.36
  5. Step 5: Solve for x
    x = 203,571,975,237.36/525,088.40
  6. Step 6: Final answer
    x = 387,690.86

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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.