Home / 425,501,890.80-638,252,836.20-166,631,074.80

Finding the Fourth Proportional to 425,501,890.80, 638,252,836.20 and 166,631,074.80

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Solution

The fourth proportional to 425,501,890.80, 638,252,836.20 and 166,631,074.80 is: 249,946,612.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,501,890.80 : 638,252,836.20 = 166,631,074.80 : x
  2. Step 2: Convert to fraction form
    425,501,890.80/638,252,836.20 = 166,631,074.80/x
  3. Step 3: Cross multiply
    425,501,890.80x = 638,252,836.20 × 166,631,074.80
  4. Step 4: Simplify right side
    425,501,890.80x = 106,352,756,090,154,368
  5. Step 5: Solve for x
    x = 106,352,756,090,154,368/425,501,890.80
  6. Step 6: Final answer
    x = 249,946,612.20

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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.