Home / 200,348,987.40-300,348,521.10-77,611,048.20

Finding the Fourth Proportional to 200,348,987.40, 300,348,521.10 and 77,611,048.20

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Solution

The fourth proportional to 200,348,987.40, 300,348,521.10 and 77,611,048.20 is: 116,348,796.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,348,987.40 : 300,348,521.10 = 77,611,048.20 : x
  2. Step 2: Convert to fraction form
    200,348,987.40/300,348,521.10 = 77,611,048.20/x
  3. Step 3: Cross multiply
    200,348,987.40x = 300,348,521.10 × 77,611,048.20
  4. Step 4: Simplify right side
    200,348,987.40x = 23,310,363,547,890,820
  5. Step 5: Solve for x
    x = 23,310,363,547,890,820/200,348,987.40
  6. Step 6: Final answer
    x = 116,348,796.42

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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.