Home / 287,913.51-431,870.31-147,582.63

Finding the Fourth Proportional to 287,913.51, 431,870.31 and 147,582.63

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Solution

The fourth proportional to 287,913.51, 431,870.31 and 147,582.63 is: 221,373.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,913.51 : 431,870.31 = 147,582.63 : x
  2. Step 2: Convert to fraction form
    287,913.51/431,870.31 = 147,582.63/x
  3. Step 3: Cross multiply
    287,913.51x = 431,870.31 × 147,582.63
  4. Step 4: Simplify right side
    287,913.51x = 63,736,556,168.72
  5. Step 5: Solve for x
    x = 63,736,556,168.72/287,913.51
  6. Step 6: Final answer
    x = 221,373.97

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1.5x scale

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.