Home / 290,042,915.40-434,426,643.90-251,779,163.40

Finding the Fourth Proportional to 290,042,915.40, 434,426,643.90 and 251,779,163.40

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Solution

The fourth proportional to 290,042,915.40, 434,426,643.90 and 251,779,163.40 is: 377,115,147.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,042,915.40 : 434,426,643.90 = 251,779,163.40 : x
  2. Step 2: Convert to fraction form
    290,042,915.40/434,426,643.90 = 251,779,163.40/x
  3. Step 3: Cross multiply
    290,042,915.40x = 434,426,643.90 × 251,779,163.40
  4. Step 4: Simplify right side
    290,042,915.40x = 109,379,576,959,811,712
  5. Step 5: Solve for x
    x = 109,379,576,959,811,712/290,042,915.40
  6. Step 6: Final answer
    x = 377,115,147.97

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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.