Home / 286,271.51-431,417.89-257,844.16

Finding the Fourth Proportional to 286,271.51, 431,417.89 and 257,844.16

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Solution

The fourth proportional to 286,271.51, 431,417.89 and 257,844.16 is: 388,577.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,271.51 : 431,417.89 = 257,844.16 : x
  2. Step 2: Convert to fraction form
    286,271.51/431,417.89 = 257,844.16/x
  3. Step 3: Cross multiply
    286,271.51x = 431,417.89 × 257,844.16
  4. Step 4: Simplify right side
    286,271.51x = 111,238,581,298.93
  5. Step 5: Solve for x
    x = 111,238,581,298.93/286,271.51
  6. Step 6: Final answer
    x = 388,577.20

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.