Home / 289,710,008.60-434,565,012.90-257,965,266.20

Finding the Fourth Proportional to 289,710,008.60, 434,565,012.90 and 257,965,266.20

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Solution

The fourth proportional to 289,710,008.60, 434,565,012.90 and 257,965,266.20 is: 386,947,899.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,710,008.60 : 434,565,012.90 = 257,965,266.20 : x
  2. Step 2: Convert to fraction form
    289,710,008.60/434,565,012.90 = 257,965,266.20/x
  3. Step 3: Cross multiply
    289,710,008.60x = 434,565,012.90 × 257,965,266.20
  4. Step 4: Simplify right side
    289,710,008.60x = 112,102,679,233,954,928
  5. Step 5: Solve for x
    x = 112,102,679,233,954,928/289,710,008.60
  6. Step 6: Final answer
    x = 386,947,899.30

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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.