Home / 346,719.40-520,079.10-197,420.20

Finding the Fourth Proportional to 346,719.40, 520,079.10 and 197,420.20

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Solution

The fourth proportional to 346,719.40, 520,079.10 and 197,420.20 is: 296,130.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,719.40 : 520,079.10 = 197,420.20 : x
  2. Step 2: Convert to fraction form
    346,719.40/520,079.10 = 197,420.20/x
  3. Step 3: Cross multiply
    346,719.40x = 520,079.10 × 197,420.20
  4. Step 4: Simplify right side
    346,719.40x = 102,674,119,937.82
  5. Step 5: Solve for x
    x = 102,674,119,937.82/346,719.40
  6. Step 6: Final answer
    x = 296,130.30

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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.