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Finding the Fourth Proportional to 210,837.40, 316,256.10 and 201,506.20

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Solution

The fourth proportional to 210,837.40, 316,256.10 and 201,506.20 is: 302,259.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,837.40 : 316,256.10 = 201,506.20 : x
  2. Step 2: Convert to fraction form
    210,837.40/316,256.10 = 201,506.20/x
  3. Step 3: Cross multiply
    210,837.40x = 316,256.10 × 201,506.20
  4. Step 4: Simplify right side
    210,837.40x = 63,727,564,937.82
  5. Step 5: Solve for x
    x = 63,727,564,937.82/210,837.40
  6. Step 6: Final answer
    x = 302,259.30

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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.