Finding the Fourth Proportional to 153,232,911.40, 211,465,883.76 and 83,622,776.21
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Solution
The fourth proportional to 153,232,911.40, 211,465,883.76 and 83,622,776.21 is: 115,401,868.39
Step by Step Solution
- Step 1: Write the proportion equation
153,232,911.40 : 211,465,883.76 = 83,622,776.21 : x - Step 2: Convert to fraction form
153,232,911.40/211,465,883.76 = 83,622,776.21/x - Step 3: Cross multiply
153,232,911.40x = 211,465,883.76 × 83,622,776.21 - Step 4: Simplify right side
153,232,911.40x = 17,683,364,273,712,352 - Step 5: Solve for x
x = 17,683,364,273,712,352/153,232,911.40 - Step 6: Final answer
x = 115,401,868.39
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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.