Home / 660,139,730.10-990,209,595.15-200,018,112.30

Finding the Fourth Proportional to 660,139,730.10, 990,209,595.15 and 200,018,112.30

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Solution

The fourth proportional to 660,139,730.10, 990,209,595.15 and 200,018,112.30 is: 300,027,168.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,139,730.10 : 990,209,595.15 = 200,018,112.30 : x
  2. Step 2: Convert to fraction form
    660,139,730.10/990,209,595.15 = 200,018,112.30/x
  3. Step 3: Cross multiply
    660,139,730.10x = 990,209,595.15 × 200,018,112.30
  4. Step 4: Simplify right side
    660,139,730.10x = 198,059,854,003,250,240
  5. Step 5: Solve for x
    x = 198,059,854,003,250,240/660,139,730.10
  6. Step 6: Final answer
    x = 300,027,168.45

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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.