Home / 280,631.34-387,271.16-151,569.80

Finding the Fourth Proportional to 280,631.34, 387,271.16 and 151,569.80

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Solution

The fourth proportional to 280,631.34, 387,271.16 and 151,569.80 is: 209,166.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,631.34 : 387,271.16 = 151,569.80 : x
  2. Step 2: Convert to fraction form
    280,631.34/387,271.16 = 151,569.80/x
  3. Step 3: Cross multiply
    280,631.34x = 387,271.16 × 151,569.80
  4. Step 4: Simplify right side
    280,631.34x = 58,698,611,509.12
  5. Step 5: Solve for x
    x = 58,698,611,509.12/280,631.34
  6. Step 6: Final answer
    x = 209,166.28

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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.