Home / 287,594,107.80-431,391,161.70-272,855,477.40

Finding the Fourth Proportional to 287,594,107.80, 431,391,161.70 and 272,855,477.40

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Solution

The fourth proportional to 287,594,107.80, 431,391,161.70 and 272,855,477.40 is: 409,283,216.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,594,107.80 : 431,391,161.70 = 272,855,477.40 : x
  2. Step 2: Convert to fraction form
    287,594,107.80/431,391,161.70 = 272,855,477.40/x
  3. Step 3: Cross multiply
    287,594,107.80x = 431,391,161.70 × 272,855,477.40
  4. Step 4: Simplify right side
    287,594,107.80x = 117,707,441,371,794,080
  5. Step 5: Solve for x
    x = 117,707,441,371,794,080/287,594,107.80
  6. Step 6: Final answer
    x = 409,283,216.10

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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.