Home / 385,406,726-578,223,653.16-155,257,378.16

Finding the Fourth Proportional to 385,406,726, 578,223,653.16 and 155,257,378.16

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Solution

The fourth proportional to 385,406,726, 578,223,653.16 and 155,257,378.16 is: 232,931,815.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,406,726 : 578,223,653.16 = 155,257,378.16 : x
  2. Step 2: Convert to fraction form
    385,406,726/578,223,653.16 = 155,257,378.16/x
  3. Step 3: Cross multiply
    385,406,726x = 578,223,653.16 × 155,257,378.16
  4. Step 4: Simplify right side
    385,406,726x = 89,773,488,379,718,784
  5. Step 5: Solve for x
    x = 89,773,488,379,718,784/385,406,726
  6. Step 6: Final answer
    x = 232,931,815.47

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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.