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Finding the Fourth Proportional to 459,925.61, 634,715.55 and 255,985.11

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Solution

The fourth proportional to 459,925.61, 634,715.55 and 255,985.11 is: 353,269.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,925.61 : 634,715.55 = 255,985.11 : x
  2. Step 2: Convert to fraction form
    459,925.61/634,715.55 = 255,985.11/x
  3. Step 3: Cross multiply
    459,925.61x = 634,715.55 × 255,985.11
  4. Step 4: Simplify right side
    459,925.61x = 162,477,729,885.46
  5. Step 5: Solve for x
    x = 162,477,729,885.46/459,925.61
  6. Step 6: Final answer
    x = 353,269.59

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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.