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Finding the Fourth Proportional to 210,328.60, 315,492.90 and 163,089.40

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Solution

The fourth proportional to 210,328.60, 315,492.90 and 163,089.40 is: 244,634.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,328.60 : 315,492.90 = 163,089.40 : x
  2. Step 2: Convert to fraction form
    210,328.60/315,492.90 = 163,089.40/x
  3. Step 3: Cross multiply
    210,328.60x = 315,492.90 × 163,089.40
  4. Step 4: Simplify right side
    210,328.60x = 51,453,547,765.26
  5. Step 5: Solve for x
    x = 51,453,547,765.26/210,328.60
  6. Step 6: Final answer
    x = 244,634.10

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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.