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Finding the Fourth Proportional to 210,038.88, 289,689.84 and 134,594.40

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Solution

The fourth proportional to 210,038.88, 289,689.84 and 134,594.40 is: 185,635.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,038.88 : 289,689.84 = 134,594.40 : x
  2. Step 2: Convert to fraction form
    210,038.88/289,689.84 = 134,594.40/x
  3. Step 3: Cross multiply
    210,038.88x = 289,689.84 × 134,594.40
  4. Step 4: Simplify right side
    210,038.88x = 38,990,630,200.90
  5. Step 5: Solve for x
    x = 38,990,630,200.90/210,038.88
  6. Step 6: Final answer
    x = 185,635.30

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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.