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Finding the Fourth Proportional to 253,739,880.40, 380,609,820.60 and 189,169,798.90

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Solution

The fourth proportional to 253,739,880.40, 380,609,820.60 and 189,169,798.90 is: 283,754,698.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,739,880.40 : 380,609,820.60 = 189,169,798.90 : x
  2. Step 2: Convert to fraction form
    253,739,880.40/380,609,820.60 = 189,169,798.90/x
  3. Step 3: Cross multiply
    253,739,880.40x = 380,609,820.60 × 189,169,798.90
  4. Step 4: Simplify right side
    253,739,880.40x = 71,999,883,222,267,088
  5. Step 5: Solve for x
    x = 71,999,883,222,267,088/253,739,880.40
  6. Step 6: Final answer
    x = 283,754,698.35

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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.