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Finding the Fourth Proportional to 525,409.20, 788,308.20 and 170,434.80

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Solution

The fourth proportional to 525,409.20, 788,308.20 and 170,434.80 is: 255,715.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,409.20 : 788,308.20 = 170,434.80 : x
  2. Step 2: Convert to fraction form
    525,409.20/788,308.20 = 170,434.80/x
  3. Step 3: Cross multiply
    525,409.20x = 788,308.20 × 170,434.80
  4. Step 4: Simplify right side
    525,409.20x = 134,355,150,405.36
  5. Step 5: Solve for x
    x = 134,355,150,405.36/525,409.20
  6. Step 6: Final answer
    x = 255,715.26

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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.