Home / 287,256.04-430,913.55-109,912.21

Finding the Fourth Proportional to 287,256.04, 430,913.55 and 109,912.21

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Solution

The fourth proportional to 287,256.04, 430,913.55 and 109,912.21 is: 164,879.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,256.04 : 430,913.55 = 109,912.21 : x
  2. Step 2: Convert to fraction form
    287,256.04/430,913.55 = 109,912.21/x
  3. Step 3: Cross multiply
    287,256.04x = 430,913.55 × 109,912.21
  4. Step 4: Simplify right side
    287,256.04x = 47,362,660,599.45
  5. Step 5: Solve for x
    x = 47,362,660,599.45/287,256.04
  6. Step 6: Final answer
    x = 164,879.60

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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.