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Finding the Fourth Proportional to 310,031.80, 465,047.70 and 203,743.60

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Solution

The fourth proportional to 310,031.80, 465,047.70 and 203,743.60 is: 305,615.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,031.80 : 465,047.70 = 203,743.60 : x
  2. Step 2: Convert to fraction form
    310,031.80/465,047.70 = 203,743.60/x
  3. Step 3: Cross multiply
    310,031.80x = 465,047.70 × 203,743.60
  4. Step 4: Simplify right side
    310,031.80x = 94,750,492,569.72
  5. Step 5: Solve for x
    x = 94,750,492,569.72/310,031.80
  6. Step 6: Final answer
    x = 305,615.40

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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.