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Finding the Fourth Proportional to 346,420.44, 478,028.52 and 203,154.12

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Solution

The fourth proportional to 346,420.44, 478,028.52 and 203,154.12 is: 280,334.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,420.44 : 478,028.52 = 203,154.12 : x
  2. Step 2: Convert to fraction form
    346,420.44/478,028.52 = 203,154.12/x
  3. Step 3: Cross multiply
    346,420.44x = 478,028.52 × 203,154.12
  4. Step 4: Simplify right side
    346,420.44x = 97,113,463,315.50
  5. Step 5: Solve for x
    x = 97,113,463,315.50/346,420.44
  6. Step 6: Final answer
    x = 280,334.10

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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.