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Finding the Fourth Proportional to 318,611.98, 439,681.07 and 175,368.94

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Solution

The fourth proportional to 318,611.98, 439,681.07 and 175,368.94 is: 242,007.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,611.98 : 439,681.07 = 175,368.94 : x
  2. Step 2: Convert to fraction form
    318,611.98/439,681.07 = 175,368.94/x
  3. Step 3: Cross multiply
    318,611.98x = 439,681.07 × 175,368.94
  4. Step 4: Simplify right side
    318,611.98x = 77,106,402,307.12
  5. Step 5: Solve for x
    x = 77,106,402,307.12/318,611.98
  6. Step 6: Final answer
    x = 242,007.23

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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.