Home / 279,038,658.98-385,070,293.52-153,588,172.74

Finding the Fourth Proportional to 279,038,658.98, 385,070,293.52 and 153,588,172.74

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Solution

The fourth proportional to 279,038,658.98, 385,070,293.52 and 153,588,172.74 is: 211,949,996.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,038,658.98 : 385,070,293.52 = 153,588,172.74 : x
  2. Step 2: Convert to fraction form
    279,038,658.98/385,070,293.52 = 153,588,172.74/x
  3. Step 3: Cross multiply
    279,038,658.98x = 385,070,293.52 × 153,588,172.74
  4. Step 4: Simplify right side
    279,038,658.98x = 59,142,242,759,806,256
  5. Step 5: Solve for x
    x = 59,142,242,759,806,256/279,038,658.98
  6. Step 6: Final answer
    x = 211,949,996.38

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1.5x scale

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.