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Finding the Fourth Proportional to 608,220.60, 912,525.30 and 209,117.40

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Solution

The fourth proportional to 608,220.60, 912,525.30 and 209,117.40 is: 313,742.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,220.60 : 912,525.30 = 209,117.40 : x
  2. Step 2: Convert to fraction form
    608,220.60/912,525.30 = 209,117.40/x
  3. Step 3: Cross multiply
    608,220.60x = 912,525.30 × 209,117.40
  4. Step 4: Simplify right side
    608,220.60x = 190,824,918,170.22
  5. Step 5: Solve for x
    x = 190,824,918,170.22/608,220.60
  6. Step 6: Final answer
    x = 313,742.94

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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.