Home / 371,235.17-512,312.21-210,090.20

Finding the Fourth Proportional to 371,235.17, 512,312.21 and 210,090.20

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Solution

The fourth proportional to 371,235.17, 512,312.21 and 210,090.20 is: 289,928.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,235.17 : 512,312.21 = 210,090.20 : x
  2. Step 2: Convert to fraction form
    371,235.17/512,312.21 = 210,090.20/x
  3. Step 3: Cross multiply
    371,235.17x = 512,312.21 × 210,090.20
  4. Step 4: Simplify right side
    371,235.17x = 107,631,771,837.17
  5. Step 5: Solve for x
    x = 107,631,771,837.17/371,235.17
  6. Step 6: Final answer
    x = 289,928.81

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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.