Home / 280,851,653.68-421,317,779.64-86,780,014.72

Finding the Fourth Proportional to 280,851,653.68, 421,317,779.64 and 86,780,014.72

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Solution

The fourth proportional to 280,851,653.68, 421,317,779.64 and 86,780,014.72 is: 130,182,474.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,851,653.68 : 421,317,779.64 = 86,780,014.72 : x
  2. Step 2: Convert to fraction form
    280,851,653.68/421,317,779.64 = 86,780,014.72/x
  3. Step 3: Cross multiply
    280,851,653.68x = 421,317,779.64 × 86,780,014.72
  4. Step 4: Simplify right side
    280,851,653.68x = 36,561,963,118,956,912
  5. Step 5: Solve for x
    x = 36,561,963,118,956,912/280,851,653.68
  6. Step 6: Final answer
    x = 130,182,474.06

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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.