Home / 426,980.16-589,226.40-257,307.84

Finding the Fourth Proportional to 426,980.16, 589,226.40 and 257,307.84

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Solution

The fourth proportional to 426,980.16, 589,226.40 and 257,307.84 is: 355,081.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,980.16 : 589,226.40 = 257,307.84 : x
  2. Step 2: Convert to fraction form
    426,980.16/589,226.40 = 257,307.84/x
  3. Step 3: Cross multiply
    426,980.16x = 589,226.40 × 257,307.84
  4. Step 4: Simplify right side
    426,980.16x = 151,612,572,254.98
  5. Step 5: Solve for x
    x = 151,612,572,254.98/426,980.16
  6. Step 6: Final answer
    x = 355,081.07

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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.