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Finding the Fourth Proportional to 518,973.72, 716,181.66 and 280,509.72

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Solution

The fourth proportional to 518,973.72, 716,181.66 and 280,509.72 is: 387,102.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,973.72 : 716,181.66 = 280,509.72 : x
  2. Step 2: Convert to fraction form
    518,973.72/716,181.66 = 280,509.72/x
  3. Step 3: Cross multiply
    518,973.72x = 716,181.66 × 280,509.72
  4. Step 4: Simplify right side
    518,973.72x = 200,895,916,915.74
  5. Step 5: Solve for x
    x = 200,895,916,915.74/518,973.72
  6. Step 6: Final answer
    x = 387,102.29

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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.