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Finding the Fourth Proportional to 556,956.21, 768,587.76 and 302,307.40

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Solution

The fourth proportional to 556,956.21, 768,587.76 and 302,307.40 is: 417,177.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,956.21 : 768,587.76 = 302,307.40 : x
  2. Step 2: Convert to fraction form
    556,956.21/768,587.76 = 302,307.40/x
  3. Step 3: Cross multiply
    556,956.21x = 768,587.76 × 302,307.40
  4. Step 4: Simplify right side
    556,956.21x = 232,349,767,397.42
  5. Step 5: Solve for x
    x = 232,349,767,397.42/556,956.21
  6. Step 6: Final answer
    x = 417,177.80

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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.