Home / 213,931,305.12-320,927,427.36-66,391,612.32

Finding the Fourth Proportional to 213,931,305.12, 320,927,427.36 and 66,391,612.32

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Solution

The fourth proportional to 213,931,305.12, 320,927,427.36 and 66,391,612.32 is: 99,596,874.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,931,305.12 : 320,927,427.36 = 66,391,612.32 : x
  2. Step 2: Convert to fraction form
    213,931,305.12/320,927,427.36 = 66,391,612.32/x
  3. Step 3: Cross multiply
    213,931,305.12x = 320,927,427.36 × 66,391,612.32
  4. Step 4: Simplify right side
    213,931,305.12x = 21,306,889,340,140,084
  5. Step 5: Solve for x
    x = 21,306,889,340,140,084/213,931,305.12
  6. Step 6: Final answer
    x = 99,596,874.46

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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.