Home / 328,142,605.80-492,176,583.90-85,830,004.20

Finding the Fourth Proportional to 328,142,605.80, 492,176,583.90 and 85,830,004.20

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Solution

The fourth proportional to 328,142,605.80, 492,176,583.90 and 85,830,004.20 is: 128,735,243.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,142,605.80 : 492,176,583.90 = 85,830,004.20 : x
  2. Step 2: Convert to fraction form
    328,142,605.80/492,176,583.90 = 85,830,004.20/x
  3. Step 3: Cross multiply
    328,142,605.80x = 492,176,583.90 × 85,830,004.20
  4. Step 4: Simplify right side
    328,142,605.80x = 42,243,518,263,278,648
  5. Step 5: Solve for x
    x = 42,243,518,263,278,648/328,142,605.80
  6. Step 6: Final answer
    x = 128,735,243.51

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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.