Home / 287,712,089.40-431,568,134.10-211,184,585.40

Finding the Fourth Proportional to 287,712,089.40, 431,568,134.10 and 211,184,585.40

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Solution

The fourth proportional to 287,712,089.40, 431,568,134.10 and 211,184,585.40 is: 316,776,878.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,712,089.40 : 431,568,134.10 = 211,184,585.40 : x
  2. Step 2: Convert to fraction form
    287,712,089.40/431,568,134.10 = 211,184,585.40/x
  3. Step 3: Cross multiply
    287,712,089.40x = 431,568,134.10 × 211,184,585.40
  4. Step 4: Simplify right side
    287,712,089.40x = 91,140,537,471,760,112
  5. Step 5: Solve for x
    x = 91,140,537,471,760,112/287,712,089.40
  6. Step 6: Final answer
    x = 316,776,878.10

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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.