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Finding the Fourth Proportional to 402,485.64, 555,225.48 and 306,826.26

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Solution

The fourth proportional to 402,485.64, 555,225.48 and 306,826.26 is: 423,264.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,485.64 : 555,225.48 = 306,826.26 : x
  2. Step 2: Convert to fraction form
    402,485.64/555,225.48 = 306,826.26/x
  3. Step 3: Cross multiply
    402,485.64x = 555,225.48 × 306,826.26
  4. Step 4: Simplify right side
    402,485.64x = 170,357,757,485.11
  5. Step 5: Solve for x
    x = 170,357,757,485.11/402,485.64
  6. Step 6: Final answer
    x = 423,264.19

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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.