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Finding the Fourth Proportional to 290,045.30, 434,549.55 and 248,573.30

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Solution

The fourth proportional to 290,045.30, 434,549.55 and 248,573.30 is: 372,415.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,045.30 : 434,549.55 = 248,573.30 : x
  2. Step 2: Convert to fraction form
    290,045.30/434,549.55 = 248,573.30/x
  3. Step 3: Cross multiply
    290,045.30x = 434,549.55 × 248,573.30
  4. Step 4: Simplify right side
    290,045.30x = 108,017,415,657.02
  5. Step 5: Solve for x
    x = 108,017,415,657.02/290,045.30
  6. Step 6: Final answer
    x = 372,415.67

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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.