Home / 287,853.24-397,547.28-219,137.16

Finding the Fourth Proportional to 287,853.24, 397,547.28 and 219,137.16

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Solution

The fourth proportional to 287,853.24, 397,547.28 and 219,137.16 is: 302,645.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,853.24 : 397,547.28 = 219,137.16 : x
  2. Step 2: Convert to fraction form
    287,853.24/397,547.28 = 219,137.16/x
  3. Step 3: Cross multiply
    287,853.24x = 397,547.28 × 219,137.16
  4. Step 4: Simplify right side
    287,853.24x = 87,117,381,904.92
  5. Step 5: Solve for x
    x = 87,117,381,904.92/287,853.24
  6. Step 6: Final answer
    x = 302,645.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.