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Finding the Fourth Proportional to 314,928,687.60, 472,393,031.40 and 249,880,309.20

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Solution

The fourth proportional to 314,928,687.60, 472,393,031.40 and 249,880,309.20 is: 374,820,463.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,928,687.60 : 472,393,031.40 = 249,880,309.20 : x
  2. Step 2: Convert to fraction form
    314,928,687.60/472,393,031.40 = 249,880,309.20/x
  3. Step 3: Cross multiply
    314,928,687.60x = 472,393,031.40 × 249,880,309.20
  4. Step 4: Simplify right side
    314,928,687.60x = 118,041,716,750,157,296
  5. Step 5: Solve for x
    x = 118,041,716,750,157,296/314,928,687.60
  6. Step 6: Final answer
    x = 374,820,463.80

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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.