Home / 266,465,931.20-399,698,896.80-72,401,392.70

Finding the Fourth Proportional to 266,465,931.20, 399,698,896.80 and 72,401,392.70

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Solution

The fourth proportional to 266,465,931.20, 399,698,896.80 and 72,401,392.70 is: 108,602,089.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,465,931.20 : 399,698,896.80 = 72,401,392.70 : x
  2. Step 2: Convert to fraction form
    266,465,931.20/399,698,896.80 = 72,401,392.70/x
  3. Step 3: Cross multiply
    266,465,931.20x = 399,698,896.80 × 72,401,392.70
  4. Step 4: Simplify right side
    266,465,931.20x = 28,938,756,788,973,576
  5. Step 5: Solve for x
    x = 28,938,756,788,973,576/266,465,931.20
  6. Step 6: Final answer
    x = 108,602,089.05

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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.