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Finding the Fourth Proportional to 545,683.61, 753,051.39 and 316,257.86

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Solution

The fourth proportional to 545,683.61, 753,051.39 and 316,257.86 is: 436,440.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,683.61 : 753,051.39 = 316,257.86 : x
  2. Step 2: Convert to fraction form
    545,683.61/753,051.39 = 316,257.86/x
  3. Step 3: Cross multiply
    545,683.61x = 753,051.39 × 316,257.86
  4. Step 4: Simplify right side
    545,683.61x = 238,158,421,071.43
  5. Step 5: Solve for x
    x = 238,158,421,071.43/545,683.61
  6. Step 6: Final answer
    x = 436,440.49

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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.