Home / 346,799.37-478,272.09-288,848.53

Finding the Fourth Proportional to 346,799.37, 478,272.09 and 288,848.53

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Solution

The fourth proportional to 346,799.37, 478,272.09 and 288,848.53 is: 398,351.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,799.37 : 478,272.09 = 288,848.53 : x
  2. Step 2: Convert to fraction form
    346,799.37/478,272.09 = 288,848.53/x
  3. Step 3: Cross multiply
    346,799.37x = 478,272.09 × 288,848.53
  4. Step 4: Simplify right side
    346,799.37x = 138,148,191,817.55
  5. Step 5: Solve for x
    x = 138,148,191,817.55/346,799.37
  6. Step 6: Final answer
    x = 398,351.91

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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.