Home / 287,537.57-431,384.00-87,852.51

Finding the Fourth Proportional to 287,537.57, 431,384.00 and 87,852.51

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Solution

The fourth proportional to 287,537.57, 431,384.00 and 87,852.51 is: 131,802.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,537.57 : 431,384.00 = 87,852.51 : x
  2. Step 2: Convert to fraction form
    287,537.57/431,384.00 = 87,852.51/x
  3. Step 3: Cross multiply
    287,537.57x = 431,384.00 × 87,852.51
  4. Step 4: Simplify right side
    287,537.57x = 37,898,168,082.47
  5. Step 5: Solve for x
    x = 37,898,168,082.47/287,537.57
  6. Step 6: Final answer
    x = 131,802.49

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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.